... , Roller Shell, Ring Forging, Gears, Gear Blank, Gear Shaft, Gear Wheel. 2. Materials: Carbon steel, Alloy steel 3.Supplying range: Shafts ... (m) Shaft ≤2.5 ≤15 Block ≤4.0 / Ring ≤4.9 ≤3.5 Cylinder ≤1.5 ≤8.0 7. Standards: GB ... , SAE, ASTM/ASME, EN, DIN, GOST 8. Max Weight: 55T 9. Certification: ISO9001: 2000, CCS 10. OEM and Customized service offered ...